Finding the Fourth Proportional to 128,524.44, 177,364.62 and 74,840.76
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Solution
The fourth proportional to 128,524.44, 177,364.62 and 74,840.76 is: 103,280.77
Step by Step Solution
- Step 1: Write the proportion equation
128,524.44 : 177,364.62 = 74,840.76 : x - Step 2: Convert to fraction form
128,524.44/177,364.62 = 74,840.76/x - Step 3: Cross multiply
128,524.44x = 177,364.62 × 74,840.76 - Step 4: Simplify right side
128,524.44x = 13,274,102,957.91 - Step 5: Solve for x
x = 13,274,102,957.91/128,524.44 - Step 6: Final answer
x = 103,280.77
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.